Signal-lamp.



W. S. "WW3.

SIGNAL LAMP.

APPLICATION FILED IAN.19. 1914.

1,209,287. v Patented Dec. 19,1916.

' INVENTOR.

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A TTORNE YS.

' ion WILLIAM S. HAMM, OF HUBBARD WOODS, ILLINOIS, ASSIGNOB TO THE ADAMS& WESTLAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SIGNAL-LAMP.

Specification of Letters Patent.

Patented Dec. 19, 1916..

. Application filed January 19, 1914. Serial No. 813,029.

To all whom it may concern:

Be it known that I, WILLIAM S. IIAMM, a citizen of the United States,and resident of Hubbard Woods, county of Cool and State of Illinois,have invented certain new and useful Improvements in Signal-Lamps, ofwhich the following is a specification, and

which are illustrated in the accompanying More specifically it relatesto a lamp of the top draft type provided with a' conical chimney flue;and it consists in providing such a lamp with a conical opaque screenadapted to fit or nest within the chimney when not in service, and to belowered 1nclose the burner so as to cut oil the l ght from some ofthelenses.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a vertical section on the line 1-1 of Fig. 2; Fig. 2 is aplan section on the line 2-2 of Fig. 1; Fig. 3 is a detail of thescreen-actuating mechanism; and Fig. 4 is a detail side elevation of thescreen.

The body or casing of the lamp is represented at 10, and its burner at11. The casing is provided with a plurality of lightemitting apertureseach provlded with a lens, as 12, 13, 14, 15. In practice it IScustomary to use lenses diflering in color, as red, white and green, andthe signal intended to be given is indicated by the number and color ofthe lenses. The lamp is of the top draft type, having air inductionports 16 in its dome, a perforated screen 17 for delivering the air intothe body of the casing, and a conical chimney flue 18 above the burner.

A conical screen 19, of substantially the lowered position, therebypermitting the signal to be given by the use of a single lens.

The screen is carried and moved by means of a yoke 21, pivotallyattached to it adjacent its lower end and having a rigid arm 22, whichis attached to a lever 23, pivoted to the wall of the casing 10 andcontrolled from without the casing by means of a lever 24 ivotallymounted in an alcove 25 of the amp casing, and having a pin 26 whichengages a slot in the outer end of the lever 23.

When the outer end of the lever 24 is dc pressed to the position shownin Fig. 1, the screen is lowered to inclose the burner 11. When theouter end of the lever 24 is thrown up to the position shown in Fig. 3,the screen is raised to the dotted lines position of Fig.

1. A guide rod 27 depends Within the chimney 18 and the screen 19, and,with'the yoke, maintains the screen in" upright position when loweredand guides it to its seat within the chimney when raised.

The invention is of special value when ap plied to top draft lamps, asshown, in that it rovides means for screening the light wit outinterfering with the circulation.

' It is obvious that the screen may be without lateral aperture if it bedesired to cut ofl the light from all of the lenses.

I claim as my invention 1. In a signal lamp, in combination, a casinghaving a plurality of light-emitting apertures, a burner within thecasing, a conical chimney flue above the burner, a conical opaque screenhaving a lateral lightemitting aperture, such screen being adapted tofit within the chimney and being movable to inclose the burner and bringits aperture into register with a light-emitting aperture of the casing.

2. In a signal lamp, in combination, a casing having a plurality oflight-emitting apertures, a burner within the casing, a conical chimneyflue above the burner, a conical opaque screen having a laterallightemitting aperture, such screen being adapted to fit within thechimney and being movable to inclose the burner and bring its apertureinto register with a light-emitting aperture of the casing, andmeanswithout the casing for moving the screen.

3. In a signal lamp, in combination, a casing having a plurality oflight-emitting apertures, a burner .within the casing, a conical chimneyflue" above the burner, a

conical opaque screen having a lateral lightemitting aperture, suchscreen being adapted to fit within the chimney and being movable toinclosethe burner and bring its aperture into register with alight-emitting aperture of the casing, a yoke pivotallyattached to thescreen, a lever pivoted to the casing and to the yoke, and means withoutthe casing for actuating the lever.

4:. In a signal lamp, in combination, a casing having a plurality oflight-emitting apertures, a burner within the casing, a conical chimneyflue above the burner, a conical opaque screen having a laterallightemitting aperture, such screen being adapted to fit within thechimney and being movable to inclose the burner and bring its apertureinto register with a light-emitting aperture of the casing, a yokepivotally attached to the screen, a lever pivoted to the casing and tothe yoke, means without the casing for actuating the lever, and a guiderod depending within the screen.

5. In a lamp, in combination, a casing having a plurality oflight-emitting apertures and means for introducing a supply of air n ltsupper portion, a burner within the easmg, a chimney flue, a screenadapted to inclose the burner provided with an aperture adapted toregister with one of the casing apertures, its upper end being of lessdiameter than the lower end of the flue, and means for vertically movingthe screen.

6. In a lamp, in combination, a casing having a plurality of lightemitting apertures; a chimney flue and a source of light within thecasing, a screen for inclosing the source of light and being of lessdiameter than the flue and having a lateral aperture adapted to registerwith one of the apertures of the casing when the screen is in its lowerposition, the axis of the screen and flue being alined, and means forraising the screen above the source of light.

. WILLIAM S. HAMM.

Witnesses:

THOMAS A. GALT, WILLIAM A. BENSON.

